2223219991 has 16 divisors (see below), whose sum is σ = 2318284800. Its totient is φ = 2130324768.

The previous prime is 2223219949. The next prime is 2223220019. The reversal of 2223219991 is 1999123222.

It is a cyclic number.

It is not a de Polignac number, because 2223219991 - 2¹¹ = 2223217943 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2223219091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2139250 + ... + 2140288.

It is an arithmetic number, because the mean of its divisors is an integer number (144892800).

Almost surely, 2^2223219991 is an apocalyptic number.

2223219991 is a deficient number, since it is larger than the sum of its proper divisors (95064809).

2223219991 is a wasteful number, since it uses less digits than its factorization.

2223219991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1998.

The product of its digits is 34992, while the sum is 40.

The square root of 2223219991 is about 47151.0338274783. The cubic root of 2223219991 is about 1305.1511578014.

The spelling of 2223219991 in words is "two billion, two hundred twenty-three million, two hundred nineteen thousand, nine hundred ninety-one".